Nortek AB 175E User manual

Doc No. 702105 Page 1 of 16
AIRBLOC AB RANGE
ELECTRIC AIR CURTAIN
INSTALLATION AND OPERATING MANUAL
INDEX Section
General Information --------------------------------------------------------1
Dimensions --------------------------------------------------------------------2
Technical Specifications ----------------------------------------------------3
Installation Details -----------------------------------------------------------4
Wiring Details ----------------------------------------------------------------5
Servicing ----------------------------------------------------------------------6
Parts Replacement ----------------------------------------------------------7
Spare Parts --------------------------------------------------------------------8
Fault Finding -----------------------------------------------------------------9
User Instructions ----------------------------------------------------------- 10
WARNINGS
1 This appliance must only be installed by a competent person in accordance with the requirements of
the Codes of Practice or the rules in force.
2 All external wiring MUST comply with the current IEE wiring regulations.
3 Warning this appliance must be earthed. Part No. 702105
Nortek Global HVAC (UK) Limited, Fens Pool Avenue, Brierley Hill, West Midlands, DY5 1QA

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1. General Information.
Welcome to the new Airbloc AB electric air
curtain models. Local regulations may vary in
the country of use and it is the installers
responsibility to ensure that such regulations are
satisfied.
All installation, assembly, commissioning and
service procedures must be carried out by
suitably qualified competent persons to the
statutory regulations in the country of use.
When assembling, installing, commissioning and
servicing is undertaken on the air curtains is
required to ensure that working at height
regulations are adhered to at the mounting
heights specified.
All dimensions shown are in mm unless
otherwise stated.
The manufacturer reserves the right to alter
specifications without prior notice.
PLEASE READ this document prior to
installation to familiarise yourself with the
components and tools you require at the
various stages.
The primary reason for installing an air curtain is
to prevent the influx of cold outside air through a
door opening into a heated area. Typical
applications include large despatch bay doors in
factories and warehouses, and internal doors
between areas of different temperatures. Wider
door openings can be accommodated by bolting
two or more units together.
Air curtains control the internal climate by
emitting an air stream with enough velocity to
meet the floor so creating an air barrier in the
door area. To prevent the ingress of outside
draughts, the discharge louvre is angled
outwards, so that the air leaving the building
meets the wind trying to enter, thus deflecting it.
(See diagrams below).
Airbloc air curtains provide uniform air
distribution across the full width of the door,
keeping heated or conditioned air inside the
building and stopping the ingress of cold air,
draughts, and dust.
This manual provides detailed information on
the installation of Airbloc AB electric air
curtains. It is essential that these products are
installed in accordance with these
manufacturers instructions.
Without air curtain With air curtain
Pattern of airflow

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2. Dimensions.
Diagram 1: Dimensions
FRONT VIEW PLAN VIEW
R/H VIEW

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3. Technical Specifications.
Air curtain model
AB 175E AB 225E
Air distribution fans
Type Centrifugal (with integral thermal trip)
Speeds 3
No. of fans 3 4
Maximum air volume 9600m3/hr 12800m3/hr
Voltage 230V 1PH 50Hz
Power rating (per fan) 1140 W
Current (per fan) 5.2A (FLC)
Start current (per fan) 12A
Power
Elements 18kW 24kW
Total power consumption 21.42kW 30.56kW
Temperature rise (∆T)
High speed 9.7°C 7.28°C
Low speed 13.86°C 10.39°C
WARNING:
THIS AIR CURTAIN SHOULD NOT BE
INSTALLED WHERE THERE IS A
CORROSIVE ATMOSPHERE.

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Gap to be kept to a
minimum
3m minimum
Bottom of air
curtain to be
level with top of
door opening
4. Installation Details.
Health and Safety
Due account should be taken of any obligations
arising from the Health and Safety at Work Act
1974 or relevant codes of practice. In addition
the installation must be carried out in
accordance with the current IEE wiring
regulations and any other relevant British
Standards and Codes of Practice by a qualified
installer. Isolate all electrical supplies to the
heater & control panel before proceeding.
For your own safety we recommend the use of
personal protective equipment when handling
this air curtain.
Airbloc electric air curtains are supplied with
mounting brackets pre-fitted, and can be mount-
ed either as single units, or in multiples, which
can be bolted together to suit various door
widths.
The minimum mounting height is 3 metres (See
diagram 2 below).
4.1
Each single air curtain should be supported by
cantilever brackets (not supplied) then fixed
back to the building structure by bolting directly
using suitable support brackets, or by
suspending from above using suitable
steelwork. (See diagram 3, page 6).
4.2
Multiple air curtains should be bolted together
using 3 off M10 set pins, nuts and washers fitted
through the holes provided in the mounting
brackets, then suitable support channels (not
supplied) must be fixed on top of the factory
fitted brackets along the full length of the
assembled air curtains to spread the load.
The assembly can now be fixed back to the
building structure by bolting directly using
suitable support brackets, or suspending from
above using steelwork. (See diagram 4 page 6).
If required, the support channel may be
extended slightly past the ends of the air
curtains to aid fixing.
Note: Where multiple air curtains are fitted
above up and over doors or where central
support is inappropriate, the support
channel should be replaced with channels of a
greater cross section to prevent the assembly
from bending.
4.3 Mounting.
It may be necessary to adjust the position of the
air outlet louvres to provide the correct airflow
across the door opening. This can be done by
first loosening the four locking pins located two
at each end of the louvres (arrowed, Fig. A),
then loosening the intermediate locking Allen
pins (arrowed, Fig. B). The louvres can now be
moved to the desired position and the locking
pins re-tightened.
Note: The AB 225 model has two pairs of
intermediate locking Allen pins, whereas the
AB 175 model only has one pair.
Fig. A
Locking pins
Diagram 2.
Locking Allen pins
Fig. B
t